What is the maximum security deposit the owner can request?

According to CO art. 257, the security deposit may not exceed 3 months of rent. If the landlord asks for a higher amount, it is illegal and the tenant can claim the reduction from the conciliation authority. The deposit must be on an escrow account in the tenant's name, not the landlord's.

How many days do I have to dispute a fee increase?

Exactly 30 days from receipt of written notice. Peremptory and mandatory term: after the 30th day, the increase becomes definitive. You must appeal to the leasing conciliation authority of your canton within this limit.

Is a cancellation on white paper legal?

No, it is nothing. The official form of the canton is mandatory, with correct notice (1, 2 or 3 months depending on the seniority of the lease) and sending by registered mail. Procedural errors in filling out the form = ineffective cancellation.

Is the security deposit protected if the owner fails?

Yes. As a separate account in the tenant's name, it is not the landlord's personal property. In the event of bankruptcy, the depositor may claim it without competing with other creditors of the property.

What does the conciliation authority do about leasing?

It is a joint body (tenant and landlord representatives) that is mandatory in every Swiss canton. Resolves rental disputes by trying to reach agreements, issuing influential opinions for any subsequent judicial appeals. It's free or low-cost.

Rentals: the right to rent in Switzerland (cross-border guide)

Di Redazione Frontaliere Ticino · Published on 5 September 2026

Swiss residential street with well-maintained buildings, representing housing quality and rental standards across Switzerland

Security deposit, cancellation and dispute: the federal rules for safe rentals in Switzerland, identical in every canton including Vaud.

Context

In brief

Maximum security deposit 3 months' rent, account in tenant's name
Landlord's notice valid only with official cantonal form
Objection within 30 days to the conciliation authority
Federal regulations identical in every Swiss canton

Key facts

What: Federal tenancy law (CO art. 253+)
Where: All Swiss cantons, including Vaud
Security deposit: Maximum 3 months' rent
Objection: 30 days to the conciliation authority
Notice form: Mandatory, provided by the canton

Tenancy law in Switzerland is governed by the Code of Obligations (CO) articles 253 and following. These regulations are FEDERAL, identical in every canton — whether it is Vaud, Zurich, Ticino, Geneva, or Basel. There is no separate "Vaud tenancy law" from federal law: the procedures and rights are the same for all.

A landlord wishing to modify the initial rent must notify the tenant in writing. The tenant has the right to object to this modification within 30 days before the cantonal conciliation authority in tenancy matters. No court appeal is necessary: conciliation resolves over 70% of conflicts without judicial procedure.

The security deposit is the guarantee that the landlord retains to cover damages to the property or non-payment of the last rent. Federal law limits it to a MAXIMUM of 3 months' rent. It must be deposited in a separate account — with a bank or the post office — in the tenant's name. If the landlord goes bankrupt, the deposit is protected because it does not belong to his personal estate.

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Operational details

The security deposit protects the owner, but the law protects the tenant by preventing it from being excessive. Setting a deposit of 5 months' rent is illegal, even if the contract states it: a judge would nullify the clause and reduce it to the maximum legal amount of 3 months. The blocked account has a crucial function: if the owner accumulates personal savings in the same account, the tenant's deposit is NOT protected. It must be segregated, clearly identified as "security deposit" with the tenant's name and the address of the property. If the owner goes bankrupt or dies during the lease, the depositor can claim their deposit without competing with other creditors of the property.

Termination: strict rules and notice periods

The termination is the unilateral withdrawal of the lease. The owner must observe PERENTORY terms: - First year of lease: 1 month notice - Second year up to the ninth year: 2 months notice - From the tenth year onwards: 3 months notice These terms start from the day of receipt of the registered letter. If the owner sends the form on January 15 and the tenant receives it on January 17, the notice period starts from January 17. If it expires on March 17, the termination becomes effective on April 30 (last day of the following month). Error in the official form = null termination. Error in calculating the term = ineffective termination. The cantonal conciliation authority verifies these details BEFORE moving to a judicial phase. If the owner has made procedural errors, the tenant can request the cancellation of the termination in the conciliation proceedings.

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Key points

How to act in case of a dispute: step-by-step procedure

Step 1: Gather documentation When you receive a rent increase or a termination, keep EVERYTHING: the owner's letter, the termination form (if present), receipts for previous rent payments, the original lease contract. If the increase lacks a written justification, document the fact immediately (email, WhatsApp message). These documents will be your file for conciliation.

Step 2: Verify the 30-day deadline You have exactly 30 days from receipt of the letter to act. If you receive the notice on March 1st, the deadline expires on March 31st. The 31st day is the FINAL deadline to file an appeal with the conciliation authority. Filing on the 32nd day = inadmissible appeal and loss of the right.

Step 3: Contact the conciliation authority Each canton has an authority (commission, office, body) dedicated to rental disputes. In Vaud, it is called the "Rental Conciliation Authority" or the equivalent local authority. You can find it on the cantonal administration website or at the municipality of residence. Request the appeal form (it is free or at minimal cost).

Step 4: Complete the appeal The form asks for: tenant's and owner's name, exact address of the property, reason for the dispute, amounts involved, attachments. Attach a copy of the owner's letter, a copy of the original lease contract, payment receipts, copies of comparable contracts to demonstrate that the proposed rent is too high compared to the market.

Sign the appeal and send it to the authority by registered mail or deposit it directly at the competent office.

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Frequently Asked Questions

What is the maximum security deposit the owner can request?: According to CO art. 257, the security deposit may not exceed 3 months of rent. If the landlord asks for a higher amount, it is illegal and the tenant can claim the reduction from the conciliation authority. The deposit must be on an escrow account in the tenant's name, not the landlord's.
How many days do I have to dispute a fee increase?: Exactly 30 days from receipt of written notice. Peremptory and mandatory term: after the 30th day, the increase becomes definitive. You must appeal to the leasing conciliation authority of your canton within this limit.
Is a cancellation on white paper legal?: No, it is nothing. The official form of the canton is mandatory, with correct notice (1, 2 or 3 months depending on the seniority of the lease) and sending by registered mail. Procedural errors in filling out the form = ineffective cancellation.
Is the security deposit protected if the owner fails?: Yes. As a separate account in the tenant's name, it is not the landlord's personal property. In the event of bankruptcy, the depositor may claim it without competing with other creditors of the property.
What does the conciliation authority do about leasing?: It is a joint body (tenant and landlord representatives) that is mandatory in every Swiss canton. Resolves rental disputes by trying to reach agreements, issuing influential opinions for any subsequent judicial appeals. It's free or low-cost.